I think that you have many lines from which to choose. On one hand, Miller strongly identifies with Giles Corey in Act III. When forced to name names and divulge the identity of his informant, Corey refuses to do so. His response to the court is a powerful one in that he does not wish to bring harm to another person. Miller himself identifies with this as he refused to name names when he was summoned to the McCarthy hearings, almost echoing the exact same words to the committee. I think that another sentiment that Miller feels towards the trials would be in how the court is so obsessed with "other motives" on the part of Proctor, Nurse, and Corey. Danforth and Hathorne make it fairly clear that they are paranoid of how those who confront the court do so in order to bring it down as opposed to simply raising questions regarding the evidence offered. In this, Miller makes it clear that those in the position of power might have little interest in concepts such as truth and justice, but rather in consolidating their own power. The fact that Parris embodies these with his claims of having his "name blackened" from the beginning only brings more credence to this. Miller's stance on those who are accused can be seen in the lines given to Corey, while his opinion in the fraudulent nature of the court is best seen in the attitudes of the court officers who are more concerned with their own prestige as opposed to any notion of legal justice or jurisprudence.